Efficient heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to an efficient heat exchanger which comprises a barrel, a necking structure, an upper sealing cover, a lower sealing cover, heat exchange pipes, heat exchange pieces, an upper end plate, a conveying pipe and a lower end plate. According to the utility model, the plurality of rows of heat exchange tubes are arranged, the upper end plate and the lower end plate are covered outside the upper sealing cover and the lower sealing cover, and the first groove and the second groove are respectively arranged on the upper sealing cover and the lower sealing cover, so that the plurality of rows of heat exchange tubes can be communicated in sequence, the structure is simple and compact, the design of excess tube pass can be realized, the medium flow is greatly lengthened, and the heat exchange efficiency is improved. And in cooperation with the heat exchange pieces vertically arranged on the multiple rows of heat exchange pipes in a sleeving mode at intervals, the heat exchange area is greatly increased, heat exchange is sufficient, and therefore the flue gas waste heat recovery rate is increased.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a high-efficiency heat exchanger. Background Technology

[0002] In industrial production processes, high-temperature flue gas carries a large amount of waste heat. Direct emission of this waste not only wastes energy but also exacerbates environmental pollution. Flue gas heat exchangers, through the principle of heat exchange, can transfer heat from flue gas to water, achieving waste heat recovery. Their high efficiency, energy saving, and environmentally friendly emission reduction characteristics make them key equipment in the industrial field, widely used in industries such as chemical, petroleum, power, steel, and metallurgy. They can be used to preheat air, heat hot water, or generate steam, thereby significantly improving energy utilization efficiency.

[0003] However, traditional heat exchangers mostly adopt a single-pass or few-pass design (usually ≤4 passes), which results in a short cold medium flow and a small heat exchange area, leading to insufficient heat exchange and low waste heat recovery rate of flue gas. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency heat exchanger that solves the technical problems of insufficient heat exchange and low waste heat recovery rate of flue gas caused by the small number of tube passes and small heat exchange area in the existing heat exchanger.

[0005] This utility model discloses a high-efficiency heat exchanger, comprising:

[0006] The cylinder is arranged vertically and has multiple air holes on both sides;

[0007] The constricted structure is located on both sides of the cylinder and covers the air hole on the same side;

[0008] A top cover is provided at the top of the cylinder;

[0009] The lower cover is located at the bottom end of the cylinder;

[0010] The heat exchange tubes are configured in multiple rows, with each row arranged at intervals along the airflow direction and vertically arranged inside the cylinder, with both ends passing through the upper cover and the lower cover respectively;

[0011] Heat exchange fins are arranged horizontally inside the cylinder and vertically spaced on multiple rows of heat exchange tubes;

[0012] The upper end plate is located on the top surface of the upper cover, and the bottom surface is provided with a plurality of first grooves arranged at intervals along the air flow direction. The first and last two columns of heat exchange tubes are respectively connected to the first and last two first grooves. The middle columns of heat exchange tubes are grouped in pairs and connected to the remaining first grooves one by one.

[0013] The conveying pipes are respectively located on both sides of the upper end plate and are respectively connected to the first grooves at the beginning and end;

[0014] The lower end plate is located on the bottom surface of the lower cover, and the top surface is provided with multiple second grooves arranged at intervals along the air flow direction. Multiple rows of heat exchange tubes are grouped in pairs and connected to the second grooves one by one.

[0015] This application achieves sequential connection between multiple rows of heat exchange tubes by setting up multiple rows of heat exchange tubes, with the upper and lower end plates covering the upper and lower end caps respectively, and then opening the first and second grooves on the two end plates respectively. Its structure is simple and compact, thus enabling the design of an excessive number of tube passes, which greatly increases the medium flow. In addition, with the heat exchange plates vertically spaced on the multiple rows of heat exchange tubes, the heat exchange area is greatly increased, making heat exchange more efficient and thus improving the waste heat recovery rate of flue gas.

[0016] Based on the above technical solution, the solution of this application can be further improved as follows:

[0017] Preferably, the heat exchange tubes in each column are arranged at equal intervals, and the heat exchange tubes in adjacent columns are staggered. This scheme can break the laminar flow state of the flue gas between the heat exchange tubes and make the flow path of the flue gas between the heat exchange tubes more tortuous, thereby enhancing the degree of turbulence and the contact area between the flue gas and the heat exchange tubes, and improving the heat exchange efficiency.

[0018] Preferably, a plurality of first partitions are spaced apart in the first groove, and a plurality of second partitions corresponding one-to-one with the first partitions are spaced apart in the second groove, for separating and forming multiple parallel hot water exchange circuits.

[0019] The delivery pipes are configured in multiple groups, with the number of groups corresponding one-to-one with the number of heat exchange circuits. Each group of delivery pipes has two pipes, which are connected to the beginning and end of the corresponding heat exchange circuit. This scheme can guide the water flow to be more evenly distributed in the heat exchange pipes, avoiding local accumulation or shortage of water flow. It helps to reduce heat exchange dead zones caused by uneven fluid distribution, improve the overall heat exchange effect, and make each heat exchange circuit independent of each other, making the maintenance and management of each water circuit more flexible and convenient.

[0020] Preferably, it further includes:

[0021] The exhaust components are configured in two sets. One set is located on the top surface of the upper end plate and is connected to the first groove in a corresponding manner. The other set is located on the bottom surface of the lower end plate and is connected to the second groove in a corresponding manner.

[0022] The exhaust component includes:

[0023] The exhaust pipe has an external thread at the intake end;

[0024] A switch valve, located on the exhaust pipe, is used to control the opening and closing of the exhaust pipe. With this solution, non-condensable gases in each area of ​​the heat exchange circuit can be discharged from the heat exchanger in a timely manner, thereby improving the heat exchange efficiency. Furthermore, through the structural design of the exhaust component, it can be ensured that the water flow in the heat exchange circuit will not leak through the exhaust component, thus ensuring stable heat exchange.

[0025] Preferably, the upper end plate, upper cover, cylinder, lower cover and lower end plate are detachably connected in sequence;

[0026] The top end of the heat exchange tube passes through the upper cover and is fixedly connected to the upper cover, while the bottom end passes through the lower cover and is movably connected to the lower cover. This design facilitates assembly and disassembly, and makes maintenance and repair easier, thereby improving the manufacturing and maintenance efficiency of the heat exchanger and making the inspection and replacement of the heat exchange tube convenient, thus reducing maintenance difficulty and cost and improving maintenance convenience.

[0027] Preferably, a first flange is fitted onto the top of the outer periphery of the cylinder, the outer periphery of the first flange matches the outer periphery of the upper cover, and they are connected by a circumferentially distributed bolt and nut assembly; this solution ensures a stable connection between the cylinder and the upper cover, guarantees the overall structural stability, facilitates assembly and disassembly, and also has good sealing performance.

[0028] Preferably, a second flange is fitted at the bottom of the outer periphery of the cylinder, the inner periphery of the second flange is adapted to the outer periphery of the lower cover, the upper end of the outer periphery of the lower cover is embedded in the second flange, and a third flange is fitted at the lower end of the outer periphery. The third flange and the second flange are connected by a circumferentially distributed bolt and nut assembly. This solution ensures a stable connection between the cylinder and the lower cover and plays a positioning role, ensuring that the through holes opened on the lower cover can be aligned with the heat exchange tubes one by one.

[0029] Preferably, the narrowing structure includes:

[0030] An outer cover, which is provided on the side of the cylindrical body, includes...

[0031] Curved plate,

[0032] Two end caps are respectively located at the upper and lower ends of the arc-shaped plate;

[0033] The connecting pipe is located outside the arc-shaped plate;

[0034] Two guide plates are arranged in a figure-eight shape and located inside the outer cover, respectively on the upper and lower sides of the connecting pipe, with their openings corresponding to the air holes on the same side. This design forms a flow guide, which guides the flue gas to disperse or converge, making the flow of flue gas in the cylinder more dispersed and uniform, thereby enabling it to make more full contact with the heat exchange tubes and heat exchange plates, thus improving the heat exchange efficiency.

[0035] Preferably, it further includes:

[0036] The drain pipe is located on one side of the bottom surface of the lower cover and is connected to the inside of the cylinder. This solution makes the cleaning and maintenance of the heat exchanger more convenient, and facilitates installation, disassembly and repair.

[0037] Preferably, the top surface of the upper end plate is provided with a first reinforcing rib, and the bottom surface of the lower end plate is provided with a second reinforcing rib. By adopting this solution, the structural strength of the upper end plate and the lower end plate can be enhanced, so that they can maintain better stability when subjected to external forces, and reduce the displacement or deformation caused therefrom.

[0038] Through the above technical solution, this utility model achieves the following beneficial effects:

[0039] This application achieves sequential connection between multiple rows of heat exchange tubes by setting up multiple rows of heat exchange tubes, with the upper and lower end plates covering the upper and lower end caps respectively, and then opening the first and second grooves on the two end plates respectively. Its structure is simple and compact, thus enabling the design of an excessive number of tube passes, which greatly increases the medium flow. In addition, with the heat exchange plates vertically spaced on the multiple rows of heat exchange tubes, the heat exchange area is greatly increased, making heat exchange more efficient and thus improving the waste heat recovery rate of flue gas. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a front cross-sectional view of the high-efficiency heat exchanger described in a specific embodiment of the present invention;

[0042] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0043] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0044] Figure 4 for Figure 1 Top view of the high-efficiency heat exchanger shown;

[0045] Figure 5 for Figure 1 Side view of the high-efficiency heat exchanger shown;

[0046] Figure 6 for Figure 1 A bottom view of the upper end plate in the high-efficiency heat exchanger shown.

[0047] Figure 7 for Figure 1 Top view of the lower end plate in the high-efficiency heat exchanger shown;

[0048] Figure 8 for Figure 1 The top view of the upper cover in the high-efficiency heat exchanger shown;

[0049] Figure 9 for Figure 4 Schematic diagram of the central exhaust component;

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Shell; 2. Narrowing structure; 3. Upper cover; 4. Lower cover; 5. Heat exchange tube; 6. Heat exchange fins; 7. Upper end plate; 8. Conveying pipe; 9. Lower end plate; 10. Exhaust components; 11. Drain pipe; 12. Support base;

[0052] 101. Vent; 102. First flange; 103. Second flange; 201. Outer cover; 2011. Arc plate; 2012. End cap; 202. Connecting pipe; 203. Guide plate; 401. Third flange; 701. First groove; 702. First partition; 703. First reinforcing rib; 901. Second groove; 902. Second partition; 903. Second reinforcing rib; 1001. Exhaust pipe; 1002. Switch valve. Detailed Implementation

[0053] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0054] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of components in a high-efficiency heat exchanger. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0058] Example:

[0059] like Figure 1 As shown in the embodiment of this application, a high-efficiency heat exchanger is disclosed for waste heat recovery of flue gas. It has the advantages of multiple tube passes, large heat exchange area, sufficient heat exchange, and high waste heat recovery rate of flue gas. Its specific structure includes: a cylinder 1, a constricted structure 2, an upper cover 3, a lower cover 4, a heat exchange tube 5, a heat exchange plate 6, an upper end plate 7, a conveying pipe 8, and a lower end plate 9.

[0060] The cylinder 1 is arranged vertically and serves as the main structure of the heat exchanger. Multiple air holes 101 are provided on both sides to provide inlet and outlet channels for flue gas.

[0061] Preferably, the vents 101 are arranged in a rectangular array, which can ensure uniform flow of flue gas inside the heat exchanger, help to form an orderly gas flow path, thereby making fuller contact with the heat exchange tubes 5 and heat exchange plates 6, and can arrange more vents 101 on the surface of the cylinder 1, thereby improving space utilization, enhancing heat exchange capacity, and forming a symmetrical and stable structure, which enhances the overall stability of the cylinder 1.

[0062] The constriction structure 2 is located on both sides of the cylinder 1 and covers the air hole 101 on the same side. It is used to connect with the flue gas conveying pipeline, diffuse the flue gas at the inlet end and converge the flue gas at the outlet end, thereby increasing the contact area between the flue gas and the heat exchange tube 5 and improving the heat exchange effect.

[0063] The upper cover 3 and the lower cover 4 are respectively located at the top and bottom of the cylinder 1, thus forming a sealed heat exchange space to prevent flue gas leakage.

[0064] The heat exchange tubes 5 are configured in multiple rows, with each row arranged at intervals along the airflow direction and vertically arranged inside the cylinder 1. Both ends pass through the upper cover 3 and the lower cover 4 respectively, which facilitates the flow of water in and out.

[0065] The heat exchange fins 6 are arranged horizontally inside the cylinder 1 and vertically spaced on multiple rows of heat exchange tubes 5. This enhances the heat conduction between the heat exchange tubes 5 and greatly increases the heat exchange area on the flue gas side, thereby strengthening the heat exchange effect. It is preferred to use aluminum fins, but it is not limited to this and no specific limitation is made.

[0066] The upper end plate 7 is located on the top surface of the upper cover 3, and the bottom surface is provided with multiple first grooves 701 arranged at intervals along the air flow direction. The first and last two rows of heat exchange tubes 5 are respectively connected to the first and last two first grooves 701. The middle rows of heat exchange tubes 5 are grouped in pairs and connected to the remaining first grooves 701 one by one.

[0067] The conveying pipes 8 are located on both sides of the upper end plate 7 and are connected to the first grooves 701 at the beginning and end, respectively, to facilitate the input and output of water flow.

[0068] The lower end plate 9 is located on the bottom surface of the lower cover 4, and the top surface is provided with multiple second grooves 901 arranged at intervals along the air flow direction. Multiple rows of heat exchange tubes 5 are grouped in pairs and connected to the second grooves 901 one by one.

[0069] Preferably, such as Figure 6 and Figure 7 As shown, the first groove 701 and the second groove 901 have an elongated structure so that they can be connected to the entire row of heat exchange tubes 5 at the same time, thereby improving the compactness and regularity of the structure.

[0070] The working principle of the above technical solution is as follows:

[0071] Lateral flow of flue gas: It enters from the constriction structure 2 on one side of the cylinder 1 in a horizontal direction, and after exchanging heat with the heat exchange tube 5 and heat exchange plate 6 inside the cylinder 1, it is output through the constriction structure 2 on the other side of the cylinder 1.

[0072] Vertical water flow: Water enters the first groove 701 at the beginning from the conveying pipe 8 on one side, then enters the first row of heat exchange tubes 5, and then flows vertically downward in the tube, thus exchanging heat with the flue gas inside the cylinder 1. Then it enters the second groove 901 at the beginning, and then enters the second row of heat exchange tubes 5 through the transfer of the second groove 901 at the beginning. Then it flows vertically upward in the tube, thus exchanging heat with the flue gas inside the cylinder 1 again. Then it enters the second first groove 701, and then enters the third row of heat exchange tubes 5 through the transfer of the second first groove 701. Then it flows vertically downward in the tube. In this way, the water will flow vertically up and down through each row of heat exchange tubes 5 until it enters the first groove 701 at the end through the last row of heat exchange tubes 5, and finally exits the heat exchanger through the conveying pipe 8 on the other side.

[0073] Understandably, by placing the upper end plate 7 on the top surface of the upper cover 3 and the lower end plate 9 on the bottom surface of the lower cover 4, and then creating the first groove 701 and the second groove 901 on both, the multiple rows of heat exchange tubes 5 can be connected sequentially to form a reciprocating hot water exchange circuit. This only requires the installation of the upper end plate 7 and the lower end plate 9 to achieve the connection between the multiple rows of heat exchange tubes 5, requiring less material and greatly reducing production costs. In addition, the installation of the upper end plate 7 and the lower end plate 9 will not interfere with the heat exchange tubes 5, thereby reducing assembly difficulty, improving production efficiency, and facilitating inspection and maintenance.

[0074] This utility model, by setting up multiple rows of heat exchange tubes 5 and covering the upper end plate 7 and the lower end plate 9 outside the upper cover 3 and the lower cover 4, and then opening the first groove 701 and the second groove 901 on the two respectively, can realize the sequential connection between the multiple rows of heat exchange tubes 5. Its structure is simple and compact, thus enabling the design of an excessive number of tube passes, which greatly increases the medium flow. In addition, with the heat exchange plates 6 vertically spaced on the multiple rows of heat exchange tubes 5, the heat exchange area is greatly increased, so that the heat exchange is sufficient and the waste heat recovery rate of flue gas is improved.

[0075] In some embodiments, such as Figure 8 As shown, the heat exchange tubes 5 in each row are arranged at equal intervals, and the heat exchange tubes 5 in adjacent rows are staggered.

[0076] The staggered arrangement described above can break the laminar flow of flue gas between heat exchange tubes 5 and make the flow path of flue gas between heat exchange tubes 5 more tortuous, thereby enhancing the degree of turbulence and the contact area between flue gas and heat exchange tubes 5, and improving heat exchange efficiency.

[0077] Preferred, such as Figure 8As shown, the heat exchange tubes 5 are arranged in an equilateral triangle geometry, meaning that the center of each heat exchange tube 5 and the centers of its two adjacent heat exchange tubes 5 form an equilateral triangle. This equilateral triangular arrangement makes full use of the space between the heat exchange tubes 5, improves the structural compactness, and allows more heat exchange tubes 5 to be arranged in the same space, thereby increasing the heat exchange area. It also makes the interaction between the heat exchange tubes 5 more uniform, ensuring the structural stability of the heat exchanger.

[0078] In some embodiments, such as Figure 6 and Figure 7 As shown, a number of first partitions 702 are spaced apart in the first groove 701, and a number of second partitions 902 corresponding one-to-one with the first partitions 702 are spaced apart in the second groove 901, which are used to separate and form multiple parallel hot water exchange circuits.

[0079] In this embodiment, the conveying pipes 8 are configured in multiple groups, with the number of groups corresponding one-to-one with the number of hot water exchange circuits. Each group of conveying pipes 8 has two pipes, which are connected to the beginning and end of the corresponding hot water exchange circuit.

[0080] For example, a first partition 702 is provided in the first groove 701 and a second partition 902 is provided in the second groove 901, so that two parallel hot water exchange paths can be formed, and the delivery pipes 8 are configured as two sets accordingly.

[0081] The above settings can guide the water flow to be more evenly distributed in the heat exchange tube 5, avoiding local accumulation or shortage of water flow, which helps to reduce heat exchange dead zones caused by uneven fluid distribution, improve the overall heat exchange effect of the heat exchanger, and make each water exchange circuit independent of each other, making the maintenance and management of each water circuit more flexible and convenient.

[0082] During the operation of the heat exchanger, non-condensable gases, such as air, may be generated or mixed in. If these gases accumulate in the heat exchange circuit, they will occupy the heat exchange space and reduce the contact area between the water flow and the heat exchange tube 5, thereby seriously affecting the heat exchange efficiency.

[0083] Therefore, in some embodiments, such as Figure 4 As shown, it also includes:

[0084] The exhaust component 10 is configured in two sets. One set is located on the top surface of the upper end plate 7 and is connected to the first groove 701 in a corresponding manner. The other set is located on the bottom surface of the lower end plate 9 and is connected to the second groove 901 in a corresponding manner.

[0085] Specifically, such as Figure 6 , Figure 7 and Figure 9 As shown, the exhaust component 10 includes:

[0086] The exhaust pipe 1001 serves as a gas discharge channel. Its inlet end is provided with an external thread, which facilitates connection with the corresponding interface thread on the upper end plate 7 or the lower end plate 9. This allows the exhaust pipe 1001 to be tightly and securely connected to the heat exchanger, thereby preventing leakage.

[0087] The on / off valve 1002 is located on the exhaust pipe 1001 and is used to control the opening and closing of the exhaust pipe 1001 so that the exhaust pipe 1001 is kept closed after the exhaust is completed, thereby ensuring that the water flow in the hot water exchange circuit will not leak through the exhaust pipe 1001.

[0088] By setting up the above two sets of exhaust components 10, non-condensable gases in each area of ​​the hot water exchange circuit can be discharged from the heat exchanger in a timely manner, thereby improving the heat exchange efficiency. Furthermore, through the structural design of the exhaust components 10, it can be ensured that the water flow in the hot water exchange circuit will not leak through the exhaust components 10, thus ensuring stable heat exchange.

[0089] In some embodiments, such as Figure 1 and Figure 5 As shown, the upper end plate 7, upper cover 3, cylinder 1, lower cover 4 and lower end plate 9 are detachably connected in sequence;

[0090] The top end of the heat exchange tube 5 passes through the upper cover 3 and is fixedly connected to the upper cover 3, while the bottom end passes through the lower cover 4 and is movably connected to the lower cover 4.

[0091] When inspecting the heat exchange tube 5, disconnect the connection between the cylinder 1 and the upper cover 3, and then lift the upper cover 3 vertically upwards. The heat exchange tube 5 and the heat exchange fins 6 fitted on its outside can then be pulled out of the cylinder 1 for inspection and maintenance from the outside.

[0092] The above-mentioned design facilitates assembly and disassembly, and makes maintenance and repair easier, thereby improving the manufacturing and maintenance efficiency of the heat exchanger and making the inspection and replacement of the heat exchange tube 5 convenient, thus reducing maintenance difficulty and cost and improving maintenance convenience.

[0093] Based on the above embodiments, such as Figure 2 As shown, a first flange 102 is fitted on the top of the outer periphery of the cylinder 1. The outer periphery of the first flange 102 matches the outer periphery of the upper cover 3 and is connected by a bolt and nut assembly evenly distributed in the circumference.

[0094] Preferably, the contact surface between the first flange 102 and the upper cover 3 is provided with an annular sealing groove, and an O-ring is embedded in the sealing groove, thereby improving the sealing effect.

[0095] The above-mentioned design ensures a stable connection between the cylinder 1 and the upper cover 3, guarantees the overall structural stability, facilitates assembly and disassembly, and provides excellent sealing performance.

[0096] Based on the above embodiments, such as Figure 3 As shown, a second flange 103 is fitted at the bottom of the outer periphery of the cylinder 1. The inner periphery of the second flange 103 is adapted to the outer periphery of the lower cover 4. The upper end of the outer periphery of the lower cover 4 is embedded in the second flange 103, and a third flange 401 is fitted at the lower end of the outer periphery. The third flange 401 and the second flange 103 are connected by bolt and nut assemblies evenly distributed in the circumferential direction.

[0097] Specifically, the lower cover 4 is embedded in the second flange 103 to form a tight fit, which enhances the stability of the structure and plays a positioning role, ensuring that the through holes opened on the lower cover 4 can be aligned with the heat exchange tubes 5 one by one.

[0098] Specifically, a good sealing surface is formed between the second flange 103 and the third flange 401, which effectively prevents flue gas leakage, and the connection is ensured by the circumferentially distributed bolt and nut assembly.

[0099] The above settings ensure a stable connection between the cylinder 1 and the lower cover 4, and also serve a positioning function, ensuring that the through holes on the lower cover 4 are aligned with the heat exchange tubes 5 one by one.

[0100] In some embodiments, such as Figure 1 and Figure 5 As shown, the narrowing structure 2 includes:

[0101] The outer cover 201 is installed on the side of the cylinder 1 and includes an arc-shaped plate 2011 and two end caps 2012. The two end caps 2012 are respectively located at the upper and lower ends of the arc-shaped plate 2011, thus forming a complete cover structure.

[0102] The connecting pipe 202 is located outside the arc plate 2011 and is used to connect to the flue gas conveying pipeline. The pipe opening is equipped with a flange to ensure the connection effect.

[0103] Two guide plates 203 are arranged in a figure-eight shape and are located inside the outer cover 201. They are respectively arranged on the upper and lower sides of the connecting pipe 202, and the opening end corresponds to the air hole 101 on the same side, so as to ensure that the flue gas smoothly enters or leaves the cylinder 1 through the air hole 101.

[0104] The above-mentioned design forms a flow guide, which guides the flue gas to disperse or converge, making the flow of flue gas in the cylinder 1 more dispersed and uniform, so that it can make more full contact with the heat exchange tube 5 and heat exchange plate 6, thereby improving the heat exchange efficiency.

[0105] In some embodiments, such as Figures 3-5 As shown, it also includes:

[0106] The drain pipe 11 is located on one side of the bottom surface of the lower cover 4 and is connected to the inside of the cylinder 1, so as to facilitate the collection and discharge of impurities and deposits inside the heat exchanger and keep the inside of the heat exchanger clean.

[0107] Multiple support bases 12 are configured and arranged around the outer periphery of the cylinder 1. They ensure that the cylinder 1 is stably supported in all directions, significantly improving overall stability and reducing the risk of failure due to vibration or impact.

[0108] The installation of drain pipe 11 makes cleaning and maintenance of the heat exchanger more convenient, while the installation of support base 12 facilitates the installation, disassembly and maintenance of the heat exchanger.

[0109] In some embodiments, such as Figures 1-4 As shown, the top surface of the upper plate 7 is provided with a first reinforcing rib 703, and the bottom surface of the lower plate 9 is provided with a second reinforcing rib 903.

[0110] The above-mentioned design enhances the structural strength of the upper plate 7 and the lower plate 9, enabling them to maintain better stability when subjected to external forces and reducing displacement or deformation.

[0111] Preferably, such as Figure 4 As shown, the first reinforcing rib 703 and the second reinforcing rib 903 have a grid structure, which can evenly distribute the pressure to the entire plate, avoid local stress concentration, and thus effectively prevent plate deformation. While providing sufficient strength, they significantly reduce weight, which helps to reduce overall weight and manufacturing cost, and achieve lightweight design.

[0112] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A high efficiency heat exchanger, characterized by, The utility model relates to a heat exchange device, including: cylinder, vertical arrangement is equipped with a plurality of air holes on both sides, necking structure, dividedly is equipped with the air hole outside on both sides of the necking structure, upper cover, is equipped with the cylinder top end, lower cover, is equipped with the cylinder bottom end, heat exchange pipe, configuration is multiple columns, each column is along air flow direction interval arrangement, and vertical arrangement is in the cylinder, and both ends respectively pass through upper cover and lower cover, heat exchange sheet, horizontal arrangement is in the cylinder, and vertical interval sleeve is equipped on multiple columns heat exchange pipe, upper end plate, is equipped with the upper cover top surface, and bottom surface is equipped with a plurality of first recess along air flow direction interval arrangement, first and last two columns heat exchange pipe respectively with first and last two first recess communication, and each column heat exchange pipe two two group in the middle, and with the rest first recess one one correspondence communication, delivery pipe, dividedly is equipped with the upper end plate both sides, and respectively with first and last two first recess communication, lower end plate, is equipped with the lower cover bottom surface, and top surface is equipped with a plurality of second recess along air flow direction interval arrangement, and multiple columns heat exchange pipe two two group, and with second recess one one correspondence communication.

2. The high efficiency heat exchanger of claim 1, wherein, Each column heat exchange pipe between equal interval arrangement, and the misplacement arrangement between adjacent two columns heat exchange pipe.

3. The high efficiency heat exchanger of claim 1, wherein, The first recess is equipped with a plurality of first baffle in interval, and the second recess is equipped with a plurality of second baffle in interval with first baffle one one correspondence, for the heat exchange waterway of multiple parallel for cut off, The delivery pipe is configured as multiple groups, and the group number with the number of heat exchange waterway one one correspondence, and each group delivery pipe has two, and respectively with the first and last end of corresponding heat exchange waterway communication.

4. The high efficiency heat exchanger of claim 1, wherein, Further including: exhaust component, configuration is two groups, one group is equipped with the upper end plate top surface, and one one correspondence with first recess communication, another group is equipped with the lower end plate bottom surface, and one one correspondence with second recess communication, Wherein, the exhaust component includes: exhaust pipe, the air inlet end is equipped with external thread, on-off valve, is equipped with the exhaust pipe, for the on-off valve control exhaust pipe.

5. The high efficiency heat exchanger of claim 1, wherein The upper end plate, upper cover, cylinder, lower cover and lower end plate are detachably connected in sequence, The heat exchange pipe top end passes through the upper cover, and is fixedly connected with the upper cover, and the bottom end passes through the lower cover, and is movably connected with the lower cover.

6. The high efficiency heat exchanger of claim 5, wherein, The outer periphery top end of the cylinder is sleeved with a first flange, the outer periphery of the first flange matches the outer periphery of the upper cover, and is connected by circumferentially distributed bolt and nut assemblies.

7. The high efficiency heat exchanger of claim 5, wherein, The outer periphery bottom end of the cylinder is sleeved with a second flange, the inner periphery of the second flange matches the outer periphery of the lower cover, the outer periphery of the lower cover is embedded in the second flange, and the outer periphery bottom end is sleeved with a third flange, and the third flange is connected with the second flange by circumferentially distributed bolt and nut assemblies.

8. The high efficiency heat exchanger of claim 1, wherein, The necking structure includes: cover, cover is equipped with the cylinder side, including arc plate, two end covers, dividedly is equipped with the arc plate upper and lower both ends, butt joint pipe, is equipped with the arc plate outside, two guide plates, are arranged in an eight-character type, and are equipped in the cover, and are arranged on the upper and lower sides of the butt joint pipe respectively, and the open end corresponds with the air hole on the same side.

9. The high efficiency heat exchanger of claim 1, wherein, Further including: A drain pipe is arranged on one side of the bottom surface of the lower cover and is connected with the inside of the barrel. A plurality of support seats are arranged around the outer periphery of the barrel.

10. The high efficiency heat exchanger of claim 1, wherein, The top surface of the upper end plate is provided with a first reinforcing rib, and the bottom surface of the lower end plate is provided with a second reinforcing rib.

Images